Firearm



L DI PEDERSEN.

FIREARM APPLICATIVON FILED APR. 2,1920. 15,4235358, Patented. July 18, 1922. Y l.. am@ "l f6 m15/ g t/"B ,C /Zz A Ll: Ll 2@ nuuuuuunu JOHN D. PEDERSEN, OF JACKSON, WYOMING.

Flaminia.v

Speeifcatonof Letters Patent. Patnjed July 18, 1922,

Original application filed July 17', 1919, Serial No. 311,689. Divided and this'application led April 2,

To all whom t may concern.'

Be it known that l, JOHN D. PnDnnsEN, a citizen oi the United States, residing in Jackson, in the county of Lincoln and State of Viyoming, have invented certain new and useful Improvements in Firearms, of which the following is a specification.

This invention relates more especially to that class ot firearms which is usually designated as small arms, and a principal object of the invention is to lprovide an improved barrel mounting construction which is particularly applicable to auto-loading and automatic pistols.

An improved autoloading pistol ot this kind is described in my Patent No. 1,34;8,1d dated riugust 3, 1920, and granted on my co-pending application, Serial No. 311,689, tiled July 17, 1919, this being a renewal oi application Serial No.42,774, filed July 30, 1915.1 Therefore, for convenience of illustrtion, l have shown my present improvei ments as arranged and applied to the par- Y ticular kind oft auto-loading pistol which is shown in the drawings or said patent., to which reference may be had.

Vfeature of my barrel mounting construction is that the'barrel of the firearm is carried within the main slide ofthe tire-arm and carried by the main slide, and is thus held in aline'ment with the slideway surfaces ot the main slide without having any sup. port on or directly by the Jr'ramc of the firearm in a direction transversely of the bore ot' the barrel.

ln the accompanying drawings, which illustratean embodiment ot my invention, Figure 1, is a side view, partly broken away to show details, oit a pistol provided with my barrel mounting constri'lction.

Figure 2 is a. front end elevation ot a pistol provided with my barrel mounting construction.

Figure 9., :is a plan view of the forward portion ot' the 'frame or receiver of the pistol.

Fig. 3, is a 'fragmentary longitudinal vertical sectional view, on an enlarged scale, of a pistol provided with my barrel mounting construction 'for illustrating the construction and arrangement ot the operative parts ot my barrel mounting.

Fig. l, is the same as Fig. 3, except that Serial No. 370,830.

the main slide4 of the pistol is partly retracted, and the sleeve or' the barrel mounting is drawn forward for unlocking the barrel of the pistol which then may be revolvedand drawn ont.

Fig. 5, is a sectional view on the line 5-5 of Fig. 3, as seen Afrom the left hand of said line looking in the direction of the arrow, the main slide being retracted as shown in Fig. 4f.

Fig. 5, is an end View of t-he barrel of the pistol as seen from the left hand in Fig. 3a, and from the right hand in Figs. 3 and 4.

Fig. 6, is a horizontal and fragmentary sectional View' for more fully showing certaindetails of a means (which comprises a barrel-guiding ring that slides within the main slide) for detaining the barrel in proper rotative position while free or" any supportive connection with the frame of the pistol. i f

Figure 7, is a perspective view of the barrel-guiding ring, together with certain' co-acting details, as seen in an oblique direction from a point to the right hand of Fig. 6. f

Similar characters designate like parts in all the views.

The main slide, C, is shown so formed and arranged that the barrel D may be carried within and thereby, and may thus be held in alinement with the slideway surfaces of this slide without having any support on or directly by, the frame itself in a. direc1w tion transversely of the bore of the barrel. Thus t-he main slide in the described preferred form thereof, constitutes a barrelcarrier,-and also a barrel-carrying powen slide,-the barrel being fitted, equipped and arranged 'for a reciprocatory or sliding movement within and rela-tively to said carrierduring the sliding movement of the carrier (through an equal stroke) on and relatively to the frame. For effecting such sliding movement of the barrel within the barrel-carrier, some suitable barrel-positioning means or device should be provided and arranged between the barrel and the trame for preventing any longitudinal movement of the barrel relatively to the fra-me during the said sliding I movement ot the barrel-carrier upon and j relatively to the frame. By the term barrel-V positioning, as applied to means, connecting considerable two slideways, or guides as 3e, 3e, located one on either side of the frame, (see Fig. 5).

The power-slide C is mounted on the frame in sliding engagement with said slideways, and has formed therein a barrel-chamber, 3j, Figs. 3 and 4. The barrel D, is located and arranged in said' barrel-chamber for sliding and rotative'movements within said chamber and relatively to the power-slide, and free of any supportive engagement with the frame.

The breech action-slide C is shown with the barrel-chamber 3j sufficiently enlarged for the barrel D, with the slide-spring 4d and guide-ring 4c thereon, (Figs 3 and 4) to be inserted from the forward end thereof. The forward end, 4P, of the barrel is held in alinement' and .guided by a'bushing or bearing 3f which isremovably fixed in the forward end, 3k, of theV member C', (see Figs. V3 and 4). Said bearing ring also forms the bearing or abutment against whichthe slidespring 4d acts at all times fornioving or holding ,the main-slide forwardly on the frame B; The ring 3f is, or may be, held in place by a screw thread, in the well-known manner indicated inV Fig. 3 by the lines of the drawing. i Y

Cn the barrel is mounted a bushing 4C of front end 4P of the barrel andto bear against a shoulder, 4k, formed by the slightly'en-V larged rear end 4e of the barrel. D. This bushing 4C has an annular recess 4m at rits front end to receive the rear end 4*? of said slide spring 4d, the external diameter of 'the bushing being made to'produce a close but freely working fit in the Acorresponding bore 31' in the forward end; 3k ofthe slide (see Figs. 3 and 4).

The chamber 3j in the forward end3k of the slide C which receives and guides the barrel-bushing, is reduced. indiameter at a point just tothe rear of the rear end vof Vthe bushing 4C, when the parts are assembled in the arm and the slide C is in its forward `or breeched-up position, Fig. rlhe diameterof this reduced bore is slightly larger than the diameter offthe enlarged rear end 4e of the barrel D, so that the slidermay move longitudinally over the barrel D.

For holding theV barrel 5D, in proper position within the slide C, during the sliding` Said gudeway maybe saidto comprise, in the preferred form thereof,

' thereon.

movements of said member C relatively to the' frame B, the barrel may have formed and transversely-located therein a single recess, as fly, (Figa) and the frame may have a correspondingly formed and located projection, as 2C, extending intoi said recess, (Figs. 3 and 4), and may have forward and rearward surfaces 2W, 2X, (Fig. 6) engaging with the forward and rearward surfaces 4 and 4", respectively, of the recess,-see Fig. 3u. A. clear spacev is shown at 81 and also at s2, s2, Figs. 3 and 4, so as to prevent the barrel from having any supportive bearing on, or Vsupported engagement with, the frame, and thereby prevent, also, the positioning engagement of the barrel and frame from having a disturbing effect upon theV alinement relations of and as between the barrel and its carrying-slide C and the sights Y Should it be deemed desirable, in any given instance, to provide a larger surface area of the contacting'fa'ces at the recess 4?, those faces may be increased in size or in number, or both; also, if preferred, other suitable or well-known means or device (not shown in this application) may be substituted, within the purview of my present invention, for said barrel-recess and frameprojection.

rlhe above described pairs of barrel-locating surfaces, are preferably of a screwlike, or helical form and arrangement, (Figs. 2a and 6), so that inv assembling the mechanism the barrelby partialV rotation thereof may bethus drawn backwardly during the operation of engaging the barrel-end 43 with the frame B. Just to the rear ofthe said Vsurface 2W, the'receiver BY hasa segmental annular drawing shoulder 2Q, Figs. 4 and 5, so arranged that whenV the barrel D is partially revolved to its position Vof normal engagement with vthe receiver B, the rear end of the barrel D is drawn back in a positive manner against the shoulder 2P. Since the forward movement of the breech block E is limited by striking the rear end 4" of the barrel D, (Fig. 3), this arrangement of the said locating and drawing surfaces locates the rear end of the barrelV longitudinally in the frame with eXtreme accuracy.

The barrel D is Vshown provided with riting, as 4b, (see Fig. 3) which is of the same chand as the screw-like lorating-surfaces at the rear end of the barrel. Cne effect of this is vthat when the proiectileis advancing through the barrel D, its inertia resists the spin given to the projectile by the rifling,

Ato move the barrel D backward with respect to the receiver B and thus,-controlled by CIT the screw-like engaging surfaces of the barrel and the receiver,-to securely draw the barrel backward into engagement with` the aforesaid segmental annular drawing shoulder 2e located in the receiver.

lt will be understood that prior to the firing of the shot, and if there is a relatively free iit between the barrel D and the slide C, the barrel may not at that time have been rotated precisely to its `true position and therefore may not be in; actual or iirm contact with said annular locatingor drawing shoulder, 2e, in the receiver B, but as the projectile advances up the bore 4f, this contact will normally be effected.

The slide C is provided on each side with a longitudinal Groove 3Q, and with a pair of parallel ribs (lig. 5) at the bottom side of the slide. The top of the receiver B, (which should or generally may be a flat surface), carries on its sides a corresponding pair of grooves 2d, so that the slide C may be assembled on the receiver from the front; the said ribs at the bottom of the slide C taking into the said grooves near the top of the receiver. The said ribs formed at the bottom of the slide open. rearwardly, and the slot in the bottom of the slide C is terminated at its front end by a stop abutment 3P. A corresponding abutment, 2J', to engage this stop abutment 3p on the slide, is located near the i'ront of the receiver B, so that the rearward movement of the slide (I will be positively limited when the slide is moved backward to engage these two surfaces 3P and 21', as in Figs. 3 and Ll. It follows from this that the operator of the armcould not be injured by the slide being thrown. to the rear end off of the receiver.

To assemble the slide C to the receiver B, the rear ends of the ribs on the slide ar engaged into the corresponding grooves at the front of the receiver and the slide carrying the breechblock and the barrel D, l

v'position (not shown) theV barrel D is rotated into its normal engagement with'the rib 2U of the receiver B. rlhe slide C is then released and under the action of the said slide-spring` is drawn forwar to its normal or bieeched-up position, as in Figs. 'l and 3.

ln order to remove the slide C and barrel D froin'the receiver B, the slide is moved backward on the receiver to a position (about midway between positions Figs. 3 and Il) where the shouldered end at SZ, formed by the rear end of the large bore, 35, in the slide will be to the rearward of the rear end of the barrel. The barrel is now grasped at the muzzle and rotated one-half turn in the propel' direction to disengage its faces 4a, 4V, from the receiver B, then the slide and barrel are pulled forward ofi of the receiver.

In connection with the arrangements alrcadv described in connection with Figs. et, 5 and 6, for slidably supporting` the barrel within the main slide C, some convenient means or devicefmay be provided for normally preventing the barrel from being` rotated in a direction for releasing or retracting the rearward end, 4e, of the barrel from its normal position relative to theV frame. ln practice, such a supplemental device, in view of the manner in which the barrel engages the frame, will not always be essential. One convenient arrangement, however, for releasably detaining the barrel against a retactive rotation is particularly illustrated in and by Figs. 3, t, 5 and G. Said retaining device in the form here illustrated comprises a rearwardly extending blade or projection ih which is lpreferably integral with the guide-bushing or sleeve 4l-C. Referring to Figs. 5 and 6, this projecting part el is shown located below the barrel and within a groove or channel therefor which is formed in the barrel; and, the rearward end fig, of said blade or projection is shown beveled so as to bear against an inclined face 2l formed in the rib 2C of the frame B. The pressure 'of the spring ed by forcing the sleeve el in rearward direction (toward the right hand in Fig. 6) operates in coniiection with said inclined face 2i for turning` the sleeve a@ and the barrel together in the proper direction by apressure of the projection el against the face li of the barrel, as will be obvious Vfrom a comparison of Figs. 3, 4, 5 and 6. By these arrangements, the mounting and the precision of alinement of the barrel relatively to the power-slide, and relatively to firearm-sights thereon, is made independent of, and unaffected by, the

alinement relations between the power-slide Y and the frame, and also independent of the positioning connection between the barrel and the frame. Y

Laving thus described my invention, l claim:

l. ln a firearm, in combination, a frame of the firearm provided with a shoulder, main slide supported by said frame and movable thereon and provided with a barrel-chamber, a barrel in said barrel-chamber rotatable for engaging the rear end of the barrel with said shoulder of the frame, means foi supporting the barrel in said barrel chamber independently of said frame of y the firearm, and means on the barrel coacting with means on the fra-me of the firearm for drawing` the barrel rearwardly to bring the rear end of the barrel into engagement with said shoulder of the frame by partial rotation of the barrel.

2. In a firearm, in combination, a frame m ll barrel in said barrelehamber rearwardly. iny dependently of the frame of the firearm, and means for drawing the barrel rearwardly to bring the rear end of the barrel into en` fi'agementwith,said shoulder by partial rotation ot thebarrel. Y

3. In a firearm, in'eombinatioii, a frame of the firearm providedL with a shoulder, a main slide supported by saidV frame and provided with a barrel-Chamber, a barrel in said barrel-chamber rotatable for engaging the rear end of the barrel with said shoulder of the frame,y means for. supporting the barrel in said barrel-chamber forwardly, means for supporting the barrel in said barrelehamber rearwardly independently o'tfk the frame of the firearm, and means on `the 'barrel eoaeting with means ,on the frame of the Iirearm for drawing the barrel rearwardly to bring the rear end of the barrel into engag-ement with said shoulder by partial rotation of the lo`arrel. Y Y Y 1 y 4;. In a firearm, in combination, a frame' of the firearm Vprovided with a shoulder, main slide supported by said frame and movable thereon and provided with a barrel-Y chamber, a barrel in said barrel-chamber rotatable for engaging the rear end of therbar-V rel with said shoulder of the frame, means engaging the main slide and barrel for supporting the barrel in said barreleehamber forwardly, means engaging the main slide and barrel 'for supporting the barrel in said barrel-chamber rearwardly iiidependently of the frame of the firearm, and helical means on the barrel eoaeting with helieal means on the frame of the firearm `for drawing the barrel rearwardly, to bring the rear end of the barrel into engagement with said shoulder of the frame by partial rotation of the barrel, said helioalmeans being non-supportive of the barrel. s

5. In a irearm, in combinatioina trame of the firearm provided with a shoulder, a

Vmain slide supported by said frame and wardly to bring therearV end of the barrel rel into engagement into engagement with said shoulder of the frame by partial rotation ef the barrel.

.6. ln a firearm, in combination, a frame ofthe firearm provided with a shoulder, a main slide supportedy by said frame and Vmovable thereon, abarrel carried by the main slide andfheld'in alinement therewith without Vjsupport for the barrel on said lframe ina direction transversely of the bore Vof the barrel, the barrel being rotatable for engagingthe rearend thereof with said shoulder ofthe frame, and helieal means on the barrel eoaetive with helical means on the frame of the firearm for drawing the barrel rearwardly to bring the rear end of the bar rel into engagement with said should r ot main slide and held in alinement therewith without support for the barrel on said frame in direction transversely of the bore of the barrel, means for preventing longitudinal movement of' the barrel relatively to the frame during movement of the slide upon said frame,the barrel being rotatable for engaging the rear end thereof with said shoulder'of the frame, and helical means ou the barrel eoacting with helical Vmeans on 'thefframe of the Virearm for drawing the.

barrel rearwardly to bring the rear end, of the Abarrel into engagement with shoulder of the frame by partial rotation ot the barrel. f

'8i En a firearm, in Combination, a frame" saidk ioo of the firearm provided rvwith a shoulder, a .Y

main slide supported by said frame and movable Ythereon and provided with a barrelehamber, a barrel in said barrel-chamber rotatable for engaging the rear end of the barrel with said shoulder of the frame-' 1 means for supporting the barrel in said barrel-cha1nber forwardly, means ltor supporting the barrel in said barrel-chamber rearwardly, means for drawing the barrel rearwardly to bring the rear end of the bai'- yith said vshoulder of the frame when the barrel is rotated, and means for preventing rotation; of the barrel .in'a direction for releasing the rear end of the barrel 'from engagement with said shoulder of the frame. y Y

9. In a firearm, in combination, ay frame of the firearm provided withV a shoulder, a main slide supported by said .frameand movable thereon and provided with a barrel-chamber, a. barrel in said chamber rotatable for engaging the rearend of the barrel with said shoulder of the frame, means engaging the main slide and engaging the barrel for supporting the barrel in said barrel-chamber forwardly, means engaging the main slide and engaging thebarrel for supporting the barrel in said barrel-chamber rearwardly,means 'for drawing the barrel rearwardly to bring` the rear end of' the barrel into engagement with said shoulder of the frame when the barrel is rotated, and means tor preventing rotation of the barrel in a direction for releasing the rea-r end of the barrel trom engagement with said shoulder ol the frame.

l0. In a firearm, in combination, a frame oi" the firearm provided with a shoulder, a main slide supported. by said -trame and movable thereon and provided with a barrel-chamber, a barrel in said chamber rotatable 'for engaging the rear end of the barrel with said shoulder of the frame, means engaging the main slide and engaging the barrel for supporting the barrel in said barrel-chamber forwardly, means engaging the main slide and engaging the barrel Jfor supporting the barrel in said barrel-chamber rearwardly, helical means forr drawing the barrel rearwardly to bring the rear end of the barrel into engagement with said shoulder of the Jframe when the barrel is rotated, and means coac-ting with the barrel and with the frame of the iirearm for preventing rotation of the barrel in a direction for releasing the rear endl of the-barrel from engagement with said shoulder of the frame.

1l. In a firearm, in combination, a Vframe of the iirearm provided with a shoulder, a main slide lsupported by said frame and movable thereon and provided with a barrel-chamber, a barrel in said chamber rotatable for engagement of the rear .end of thebarrel with said shoulder of the frame, means engaging the main slide and engaging the barrel for supporting the barrel in said barrel-chamber forwardly, means engaging the main slide and engaging the barrel 'for supporting the barrel in said bari rel-chamber rearwardly, helical means on the barrel coacting with helical means on the frame of the firearm for drawing the barrel rearwardly to bring the rearend of the barrel into engagement with said shoulder of the frame when the barrel is rotated, and projection means coacting with the barrel and with the frame of the iirearm for preventing rotation of the barrel in a direction for releasing the rear end of the barrel from engagement with said shoulder of the frame.

12. In a firearm, in combination, a frame of the iirearm provided with a shoulder, a main slide supported by said frame and movable thereon and provided with a barrel-chamber, a barrel inV said chamber rotatable for eno'agement of the rear end of the barrel with said shoulder of the frame, means engaging the main slide and engaging the barrel for supporting the barrel in said barrel-chamber forwardly, means engaging the main slide and engaging the barrel 'for supporting the barrel in said barrelchamber rearwardly, meansl on the barrel coacting with means on the trame of the i'irearm for drawing the barrel rearwardly to bring the rear end of the barrel into engagement with said shoulder of the frame when the barrel is rotated, and means coasting with the barrel and with the frame oit the firearm for preventing rotation of the barrel in a direction for releasing the rear end of the barrel :from engagement with said shoulder of the frame, said means for preventing rotation being comprised in said means for supporting the barrel in the barrel-chamber rearwardly.

13. In a firearm, in combination, a iframe of the firearm, provided with a shoulder, a main slide supported by said frame and movable thereon and provided with a barrel-chamber, a barrel in said chamber rotatable for engagement ofthe rear end of the barrel with said shoulder' of the frame, means engaging the main slide and engaging the barrel 'for supporting the barrel'in said barrel-chamber forwardly, means engaging the main slide and engaging the barrel for supporting the barrel in said barrel-chamber rearwardly, helical means on the barrel coacting with helical means on the frame of the rearm for drawing the barrel rearwardly to bring the rear end of the barrel into engagement with said shoulder of the frame when the barrel is rotated, and projection means coacting with the barrel and with the frame ot the iirearm Jfor preventing rotation oi' the barrel in a direction for releasing the rear end of the barrel from engagement with said shoulder of the trame, said projection means for preventing rotation being Ycomprised in said means for supporting the barrel in the barrel-chamber rearwardly. A .Y

14C. In a iirearm, in combination, a frame of the irearm provided with slide-ways and a shoulder, a main slide supported by said frame and reciprocatable on said slide-ways, a barrel carried within and by the main slide and rotatable tor engaging the rear end of the barrel with said shoulder of the frame, the main slide being movable over the barrel when reciprocated, a slide spring, means for retaining the barrel within themain slide during sliding movements of the main slide relative to the frame of the lirearm, means for drawing the barrel rearwardly to bring the rear end thereof into engagement with said shoulder of the frame of the fire arms, said means consisting of transversely located means on the barrel non-supportive of the barrel by the frame of the lirearm and coacting with transversely located means on said frame, and means coacting with the barrel and with the frame of the firearm tor preventing rotation of the barrel in a direction for releasing the rear end of the barrel Vfrom engagement with lsaid*l shoulder of the frame. a

15. In a firearm, in combination', a frame of the firearm provided With slideivays and a shoulder, a main Vslide supported by said' frame and reciprocatable onlsaid vslideways and provided with a barrel-chamber, a barrel 'in said barrel-chamber'rotatable to bring the acting with a 'correspondingly located pro-` jection of the frame or' the firearm non-supportiveof the barrel by the frameof the firearm for retaining the barrel in position4 in said barrel-chamber, and for drawing the barrel rearwardly to bring the rear end of the barrel into engagement with said shoulder of the frame when the barrel isv rotated, and an inclined face on the frame of the firearm, said blade of the guide sleeveY engaging said channel of the barrel and the beveled edge of the blade engaging. said ini clined face for preventing rotation o1" the barrel in ar direction for releasing Athe rear end of the barrel from engagement with said shoulder of the frame. Y

'16. In a firearm, in combination, a frame of the firearm provided with slideways and having a rib with an inclined faceformed rreleasing the VVrearward end of the barrel from its normal position relative to the frame; said means comprising a guide-sleeve engagingthe main slide and engaging said Vslide spring and provided with a blade engagmg'said inclined face of the frame.A

417. Ina firearm, in combination, a Yl'rame of the firearm'provided with slideways and having a rib with an inclined face formed therein, a main slide provided with slideway surfaces for engaging the slideways oi said frame, a slide-spring, a barrel provided With a channel formed therein, said barrel being carried by the main slide and held in alinement with the slideway surfaces of the Vmain slide Without support fortlie barrelV on the frame of the firearm in a direction transversely of the bore of the barrel, and means for preventing the barrel from being rotated in a direction for releasing the rearward end of the barrel from its normal position relative yto the frame; said means comprising a guide-sleeve engaging the inain slide and engaging said slide-'spring and provided with a blade engaging said channel having a beveled rearward end engaging said'inclined face vof the frame.

Y JOHN D. PEDERSEN.

lifitnesses: r

HARRY VAGNER, C. JPEDERSEN. 

